Furnace



I (No Model.)

J. H. .JOHNSON & J. MGRAN. PURNAOB No. 485,762. Patented Nov. 8, 1892.

, UNITED STATES PATENT OFFICE.

JOHN H. JOHNSON AND JAMES MORAN, OF ORANGE, TEXAS.

FU RNACE.

SPECIFICATION forming part of Letters Patent No. 485,762, dated November 8, 1892.

Application led March 22, 1892. Serial No. 425,897- (No model.)

To @ZZ whom t may concern,.-

Beit known that we, JOHN H. JOHNSON and JAMES MORAN, citizens of the United States, residing at Orange, in the county of Orange and State of Texas, have invented a new and useful Furnace, of which the following is a specification.

This invention relates to furnaces; and it has for its object to provide an improved furnace especially adapted to be located at the side of a kiln or drying-house, which furnace shall be so constructed as to be simple,durable, and inexpensive, and the parts of which may be readily pnt together' or separated, as may be desired.

To this end itis the primary object of this invention to provide important improvements over our former patent, No. 462,354, dated November 3, 1891.

With these and many other objects in view, which will readily appear as the nature of the invention is better understood, the same consists in the novel construction, combination, and arrangement of parts hereinafter more fully described, illustrated, and claimed.

In the accompanyingdrawings, Figure l is a perspective view of a furnace constructed in accordance with our invention. Fig. 2 is a Vertical longitudinal sectional view. Fig. 3 is a vertical transverse sectional view.

Referring to the accompanying drawings, A represents the casing of our improved furnace, which casing is composed of a semicircular series of sets of rectangular metal plates B. The plates forming the top and a portion of the side of the casing are curved, so that when all of the plates are clamped together the said furnace-casing will be approximately semicircular in cross-section. Each of the rectangular plates B are provided with the encircling flanges C, which surround all four sides thereof and meet the adjacent flanges of the adjacent plates of each series and set, all of said flanges thereby closely fitting each other to form a continuous and unbroken casing, which is firmly held together by passing bolts D through all of the meeting anges. It will be readily seen by this construction that any particular portion of the casing may be removed without disturbing the other parts thereof for the purpose of repairs, &c., and also that the entire casing can be dissembled,

if so desired. interposed between the meeting flanges of all the platesY is the asbestus packing E, which not only forms a tight joint, but serves as a cushion to allow for the expansion and contraction of the various plates. The meeting flanges of the end plates of the casing form continuous semicircular end flanges, to which are secured the front and rear end plates F and G, respectively, from which rear end plate projects the annu1arly flanged collar H, while the front end plate is provided with the doors I and J, which communicate with the fire-box and ash-pit, respectively. The interior of the casing accomlnodates the ordinary grate K, separating the ash-pit from the fire-box.

Securely and detachably connected to the flanged collar H is the sectional fine L. The said flue L, which is connected to said collar in rear of the furnace, extendsrearwardly a short distance, thence laterally, as at L', and then forwardly, as at L2, to the stack L3, which extends upwardly at the front end of the tine and in a line'with the front end of the furnace. The said flue comprises reversely-arranged pairs of semicircular sections or plates M, which sections are provided with the straight horizontal flanges N along the sides thereof, while their ends are also provided with the semicircular flanges O. The saidsemicircular sections or plates comprising the flue are placed one above the other and having the several flanges thereof closely in contact, which {ianges are securely, yet detachably, bolted together by means of the bolts P, and also have interposed therebetween the asbestus packing and cushion Q for the same purpose as the similarI packing and cushion between the fianges of the casing-plates. The lower semicircular plates or sections of the iiue rest upon aseries of suitably-located supports R, which thus support the lower sections of the flue and allow any one or all of the upper semicircular sections to be removed and replaced when desired without a disturbance of the other parts, thus securing an important advantage over ordinary furnace-fines.

The ends of the flue portions L and L2, respectively, have their open ends terminate in circular flanges formed by the meeting semicircular iianges of the upper and lower iiue IOC sections or plates, and said ends are inclosed by the removable cap-plates S, lwhich are 'securely bolted to said ilanges,.. and which may be also readily removed for cleaning, &c.

In operation any desired number of improved furnaces lnay be arranged at the sides of a kiln or drying-house, as will be quite apparent to those skilled in the art.

The construction is not only simple, but also provides for the ready detachment of every part of the casing and fines for removal or repair.

Having thus described our invention, what we claim, and desire to secure by Letters Patent, is-

l. A furnace comprising semicircular series of sets of metal plates, said plates being each provided with anges encircling all the sides thereof and meeting the adjacent flanges of the adjacent plates of each series and set, meeting to form an approximately-semicircular casing and semicircnlar end'flanges, the' front and rear end plates secured to said semi' circular end flanges, and bolts passing through the meeting flanges, substantially as set forth.

2. In a furnace, the casing consisting of semicircular series of sets of rectangular curved plates forming the sides and top of the same, said plates being each provided with flanges surrounding all four sides thereof and meeting the adjacent flanges of the adjacent plates of each series and set to form an approXimately-semicircular casing and semicircular end flanges, front and rear end plates secured to said semicircular end flanges, asbestus packinginterposed between the various meeting flanges to form a cushion-joint, the

flue extending from one of said end plates, and bolts passing through the several meeting llanges, substantially as set forth.

3. In a furnace, the combination, with the casing havinga flanged collar projecting from the rearend thereof, of the sectional llue comprising a series of independent reversely-arranged pairs of semicircular plates having straight horizontal flangesv along the sides thereof and selnicircular flanges at their ends, the flanges of the plates and flue-sections abutting and bolted together, substantially as set forth.

4. The combination, with the furnace, of the sectional flue connected With said furnace and consisting in a series of reversely-arranged pairs of upper and lowerindependent semicircular plates having straight horizontal ilanges along the sides thereof and semicircular flanges at their ends, the flanges of the plates and flue-sections abutting the ends of section of the flue terminating in circular flanges, cap-plates removably secured to said circular flanges, asbestus packing interposed between the various meeting flanges to form a cushion-joint, the supports receiving the lower semicircular sections of the flue, and bolts abutting the flanges together, substantially as set forth.

In testimony that We claim the foregoing as our own we have hereto affixed our signatures in the presence of two Witnesses.

v JOHN H. JOHNSON.

JAMES MORAN.

Witnesses:

JOHN GRIFFITH, H. STARKs. 

